St. John, ND Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. John, a city in Rolette County, North Dakota.
Tonight
54°F
Slight Chance Rain Showers
A slight chance of rain showers before 1am, then patchy fog between 1am and 2am, then patchy fog and a slight chance of rain showers. Mostly cloudy, with a low around 54. Southwest wind 3 to 10 mph. Chance of precipitation is 20%.
7-day forecast for St. John
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Slight Chance Rain Showers | 3 to 10 mph SW | 21% |
| Saturday | 62°F | Patchy Fog | 3 to 15 mph N | 26% |
| Saturday Night | 43°F | Mostly Cloudy | 7 to 14 mph NE | 1% |
| Sunday | 62°F | Mostly Cloudy | 6 to 9 mph E | 1% |
| Sunday Night | 41°F | Partly Cloudy | 6 mph SE | 1% |
| Monday | 65°F | Sunny | 5 to 10 mph SE | 0% |
| Monday Night | 44°F | Mostly Clear | 7 to 10 mph S | 0% |
| Tuesday | 65°F | Mostly Sunny | 10 to 20 mph S | 1% |
| Tuesday Night | 49°F | Partly Cloudy | 17 mph S | 5% |
| Wednesday | 67°F | Partly Sunny | 15 to 18 mph S | 11% |
| Wednesday Night | 52°F | Partly Cloudy | 12 to 15 mph S | 14% |
| Thursday | 70°F | Mostly Sunny | 13 mph S | 10% |
| Thursday Night | 52°F | Mostly Clear | 8 to 12 mph S | 8% |
| Friday | 70°F | Mostly Sunny | 12 to 17 mph S | 7% |
Forecast source: National Weather Service (api.weather.gov) for St. John (48.944, -99.713). Updated through the day.
Growing snapshot for St. John
Last spring frost
May 19
First fall frost
Sep 24
Growing season
126 days
Hardiness zone
3b
More local growing data for St. John: nearby ZIP 58369 weather · frost dates · planting calendar · North Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Belcourt Keya Radio, Nd (8.6 mi from St. John). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.